AMETEK XG Family Programmable DC - Manual (Page 246)

Communications Options
6-40 M370430-01 Rev E
Click Input/Output to begin communicating with the unit.
Verify after every command sent that you are also using the correct
termination character which in this case is \r.
Before starting communicating with the power supply, you need to
first set the address from what you set the unit to via front panel
controls using the command *ADR N where N is the address #. In
this case, the address was set to 1, so the command
*ADR 1 was
sent.